Slide fastener



FIG. 1 is a top plan view of the slide fastener showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is an enlarged edge view taken from the top or bottom of FIG. 1shown fragmentarily for ease of illustration; and

FIG. 4 is a side elevational view thereof.

The ornamental design for a slide fastener, substantially as shown.